Vermont Gage 111122100 Class Zz Plus Plug Gage 0.221 in

Product Description

The VERMONT GAGE 111122100 is a Class ZZ Plus plug gage designed for precision dimensional inspection of bored holes, drilled passages, and machined openings. It measures a nominal diameter of 0.221 inches with a tolerance of 0.0002 inches, making it suitable for go-inspection applications where tight dimensional control is required. Manufactured from tool steel and finished to a 10 microfinish surface quality, this gage delivers consistent, repeatable contact with the workpiece. Each unit ships with a Certificate of Accuracy traceable to NIST, satisfying documentation requirements for ISO and quality-management inspection programs. Machinists, quality technicians, and metrology professionals are the primary users of this instrument.

This plug gage is used in machine shops, manufacturing facilities, and quality-control labs where small-bore verification is part of a standard inspection routine. It is suited for go-inspection checks on holes in the 0.221-inch range and can be used alongside set micrometers, verniers, and other precision measuring devices to verify or calibrate equipment. Its compact overall length of 2.0 inches allows use in confined setups and on small workpieces. The gage is appropriate for both production-floor spot checks and formal inspection station use where ASME B89.1 compliance is required.

Key Features

• Class ZZ Plus tolerance grade with 0.0002-inch tolerance for precision go-inspection
• 0.221-inch nominal measurement diameter
• 10 microfinish surface for consistent, accurate contact with bore surfaces
• Tool steel construction for durability and dimensional stability under repeated use
• Includes Certificate of Accuracy with NIST Traceability for documentation and compliance
• Conforms to ASME B89.1 dimensional gage standards

Compatibility

Designed for go-inspection of holes at 0.221-inch nominal diameter and for use with set micrometers, verniers, and other precision measuring devices as stated by the manufacturer.

Installation Notes

Plug gages are handled and used by quality technicians and machinists — no power tools or electrical shutoff is required. Keep the gage clean and lightly oiled when not in use to prevent corrosion on the tool steel body. Do not force the gage into an undersized bore, as this can damage the gage surface and invalidate calibration. Store in the provided case or a protected location away from temperature extremes to maintain dimensional accuracy.